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Data-driven studies in face identity processing rely on the quality of the tests and data sets
,
Zoe Hilker,
Natalie Mestry,
Sarah Bate,
Peter J.B. Hancock
Cortex, Volume: 166, Pages: 348 - 364
Swansea University Author:
Alex Jones
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© 2023 The Authors. Published by Elsevier Ltd. Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0).
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DOI (Published version): 10.1016/j.cortex.2023.05.018
Abstract
There is growing interest in how data-driven approaches can help understand individual differences in face identity processing (FIP). However, researchers employ various FIP tests interchangeably, and it is unclear whether these tests 1) measure the same underlying ability/ies and processes (e.g., c...
| Published in: | Cortex |
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| ISSN: | 0010-9452 |
| Published: |
Elsevier BV
2023
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa63799 |
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| Abstract: |
There is growing interest in how data-driven approaches can help understand individual differences in face identity processing (FIP). However, researchers employ various FIP tests interchangeably, and it is unclear whether these tests 1) measure the same underlying ability/ies and processes (e.g., confirmation of identity match or elimination of identity match) 2) are reliable, 3) provide consistent performance for individuals across tests online and in laboratory. Together these factors would influence the outcomes of data-driven analyses. Here, we asked 211 participants to perform eight tests frequently reported in the literature. We used Principal Component Analysis and Agglomerative Clustering to determine factors underpinning performance. Importantly, we examined the reliability of these tests, relationships between them, and quantified participant consistency across tests. Our findings show that participants’ performance can be split into two factors (called here confirmation and elimination of an identity match) and that participants cluster according to whether they are strong on one of the factors or equally on both. We found that the reliability of these tests is at best moderate, the correlations between them are weak, and that the consistency in participant performance across tests and is low. Developing reliable and valid measures of FIP and consistently scrutinising existing ones will be key for drawing meaningful conclusions from data-driven studies. |
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| Keywords: |
Face identity processing (FIP), Face perception, Face memory, Individual differences, Principal component analysis, Agglomerative clustering |
| College: |
Faculty of Medicine, Health and Life Sciences |
| Funders: |
Anna K. Bobak was funded by the Leverhulme Early Career Fellowship, grant number ECF-2019-416; Peter J.B. Hancock was funded by the EPSRC, grant number EP/N007743/1. |
| Start Page: |
348 |
| End Page: |
364 |